Lodge: “Camarophyllus has a lamellar trama of highly interwoven, generally uninflated, glassy-walled hyphae, whereas Hygrocybe has a regular or subregular arrangement of hyphae in the lamellar trama, composed of inflated hyphae with thinner walls. Camarophyllus comes out at the base of the family, Hygrocybe in the upper, distal branches, and Hygrophorus, (with divergent lamellar trama and apparently strict ectomycorrhizal associations) between them in the middle. Unless you want to go back to the Hesler & A.H. Smith system of calling everything in the family as one genus, Hygrophorus, then you have to recognize Camarophyllus as a separate genus from Hygrocybe. See the molecular phylogenetic tree in Matheny et al. 2006.”